The OS Explorer OL23 map of Cadair Idris, suitable for the Welsh Three Peaks Challenge.
Covering a large area of the southern Snowdonia National Park, many other mountains and routes are included.
Other highlights of this map include: Minfford Path, Talyllyn lake, Dol Idres.
The map includes a code to access a digital download in the OS Maps phone app - you need to wait for receipt of the paper map in order to access this.
Available here in both standard and active waterproof versions - the standard version weighs 126 grams, the waterproof active version weighs 196g.